This guy is being so confusing...?

So, i have been talking to this guy who we will call Jacob. Jacob has been texting me for a while and he says he really likes me. Well, my ex says he has a girlfriend and i thought he was just trying to make Jacob seem unavailable. Well, i told Jacob the whole conversation between me and my ex and it turned out Jacob did have a girlfriend. He said that he had been searching for my number all summer and he gave up and then he started going out with her, who we will call Olga. lol. Then he said that he found my number and just had to text me. He said he really really liked me. And then i said that it was either me or her and he said he wouldn't be with her for much longer. Pretty much picking me, right? Well, tonight when he texted me, i asked him what the deal was with us. This is what i sent to him, "What's the deal with us? I mean, i know you have a girlfriend, and you say you won't be with her for much longer, but idk... lol" and he said, "lol. idk" and i was like, "id just like to know" then he asked what i wanted to know again and i said you already forgot... and he never texted back. also, he calls me babe, beautiful, etc. and we trade pictures. any advice on this guy... i mean, does he just wanna trade pictures or is he really gonna dump Olga... i just need some advice. idk about all of this...